Analytical pyrolysis is a technique currently used for investigating structural features of complex macromolecular materials. However, pitfalls appear to be widespread in pyrolysis studies of humic substances, and serious limitations can be experienced during the analytical procedure due to thermal reactions and configuration of the pyrolysis units and chromatographic systems. Pyrolysis present...

Many of the basic concepts of green chemistry are familiar to pollution prevention practitioners. The concepts of substituting less hazardous materials into chemical formulations and reducing wastes have been around for many years. Green chemistry has taken these concepts and expanded the scope of possibilities by fully evaluating all aspects of chemical reactions, processes and formulations. T...

Background: Gas refining is a process in which workers are exposed to different chemicals. This study aimed to assess the health risks caused by exposure to these substances in order to determine hazardous jobs and to present controlling methods. Materials and Methods: This cross-sectional study was performed on the workers at gas refinery in 2015. The sample included all the staff in operat...

The present paper discusses sintered glass–ceramics with attractive appearance, which are obtained by vitrification of hazardous industrial wastes. The chemical durability of parent wastes and resulting glasses was characterised by toxic characteristics leaching procedure (TCLP). The crystallisation behaviour was evaluated by DTA and XRD, while the structure of materials was observed by optical...

ABSTIUCT Hazardous waste management methods that are affordable and relatively simple to implement are often overlooked as environmental managers aearch for process modifications or chemical substitutions. Process modifications often require capital funding and lengthy schedules for implementation, while chemical substitutions often require extensive research and testing. Methods such as elimin...

In Germany, chemical eye burns are a common and recurring cause of long-term vision disorders and even blindness. Severe eye burns, however, have become less common thanks to sophisticated safety systems and high levels of safety standards in industrial workplaces. In contrast, extremely hazardous substances capable of causing severe eye damage are readily available on the private consumer mark...

The specific elemental composition of industrial glass products influences several of its physical properties, such as heat and shock resistance, transparency, and chemical reactivity. Chemical analysis of glass samples is therefore required to support both R&D and production operations. Unfortunately, full elemental analysis of glass by a method like ICP-OES requires digestion with hazardous a...

Readers of Current Content@ (CP ) have often heard me praise Philadelphla’s cultural and scientific achievements. While I take great pride in these and other local accomplishments, Philadelphia, like most other cities, does have its share of problems such as waste disposal. But if we are slow to act in the face of this public health issue, overcoming our complacency toward wastes that are invis...